Contact Us

EPM, Inc.
112 W Burke St.
Stockbridge, GA 30281
800-659-5050
[email protected]

Phones and Fax Numbers

Call Free in the US: 800.659.5050
Local & International: 770.389.0501
Fax U.S: 888.353.7325
Fax Local & International: 770.389.0652
V-Seal Materials 2017-01-10T11:26:31+00:00

Elastomeric Sealing Materials

NITRILE RUBBER (NBR)

This elastomer is a copolymer of butadiene and acrylonitrile and is used for the majority of conventional fluid sealing applications.

Physical data:
– Working temperature range: -40°C to +120°C in oil / +90°C in water
– Tensile strength: up to 15 MPaoil_pic10

– Standard color: black

Advantages:
– Good resistance to mineral oil and grease
– Good resistance to water and radiator fluid
– High tear strength

Limitations:
– Poor resistance to high-alloyed hypoid oil
– Not resistant to automotive brake fluid (glycol based)
– Poor resistance to polar fluids (ketones, ethers, esters)
– Poor resistance to chlorinated hydrocarbons (carbon tetrachloride, trichlorethylene)
– Poor resistance to aromatic solvents

 

FLUORINATED RUBBER (FPM)

Fluoroelastomer (FPM) Fluoropolymer Rubber  

It has good chemical resistance and is recommended for high temperature applications.

Physical data:
– Working temperature range: -30°C to +200°C
– Tensile strength: up to 15 MPa
– Standard color: brown

Advantages:
– Excellent resistance to mineral oil and above all high-alloyed hypoid oils
– Excellent acid resistance
– Good resistance to aromatic and chlorinated hydrocarbons
– Excellent resistance to aging, ozone and weathering

Limitations:
– Limited cold flexibility
– Poor resistance to polar fluids (ketones, ethers, esters)

 

SILICONE RUBBER (SIL)

Also referred to as MVQ.

Physical data:
-Working temperature range: -60°C to +220°C
– Tensile strength: approx. 3-7 MPa
– Standard color: red

Advantages:
– Retains flexibility down to very low temperatures
– Withstands continuous heating at high temperatures without hardening
– Resistant to mineral oils and greases
– Excellent resistance to aging, weathering and ozone
– Good chemical resistance to alkalis

Limitations:
– Not recommended for use with hydrocarbons, such as petrols and paraffin, and lighter mineral oils
– Not resistant to hot water, acids and non-mineral automotive brake fluids
– Poor tensile and tear strength
– Poor wear resistance

 

CHLOROPRENE RUBBER (CR)

Mostly known under the trade name NEOPRENE® from Du Pont

Physical data:
– Working temperature range: -40°C to +80°C
– Tensile strength: up to 15 MPa

Advantages:
– Excellent resistance to aging, weathering, and ozone
– Moderate resistance to mineral oils and greases

Limitations:
– Tends to harden or stiffen at low temperatures
– Not resistant to non-mineral automotive brake fluids